<?php
class Person
{
    public $height;
    public $weight;

    public function eat() {
        echo '正在吃饭';
    }

    public function drink() {
        echo '正在喝水';
    }

    private function run() {
        echo '正在奔跑';
    }

    protected function jump() {
        echo '正在跳高';
    }

    public function run2() {
        $this->run();
    }
}